This How-To thread is being written to show the steps I took to install a dual solenoid line lock (or roll control) system on my 2006 4.0L V6 Pony Package coupe.  The car has anti-lock brakes (ABS), so I followed the advice of others and went with a dual solenoid system.  Some have posted that a single solenoid will suffice on cars with ABS, but I decided to take the recommendation of the majority who have weighed in on the subject.

The system I purchased was a “kit” from PowerHouse Automotive (PH).  I use the term “kit” loosely, because it is really a combination of parts amassed by PH.  The solenoids are from Biondo Racing, and the rest of the components could be purchased by a self-installer, if you so desired to gather the needed parts yourself.  The procedure outlined below could also be used as a general guide if you purchase a kit by another supplier, or wanted to install line locks on a different vehicle.

Below is a picture of what came with the PH “kit”:


MOUNTING THE SOLENOIDS
Although I mounted the solenoids after running most of the wiring first, listing the solenoids first will make it easier to explain the installation.

An installation diagram was supplied with the solenoids.  For these parts, the nutted side of the solenoid connects to the feed line from the master cylinder.  The brass side of the solenoid goes to the brakes (brass-to-brakes).  I used the brass fittings supplied by PH, and attached them to the solenoid while securely in a vise.  It’s a lot better to work on them at your workbench rather than inside the wheelwell.  Make sure your connections are TIGHT, but don’t strip out the brass fittings either.  Pipe dope is available that is OK to use with oil based liquids, but I kept my fittings dry.  In my case, I mounted the 90* fitting on the brake side of the solenoid.

Rather than try to mount the solenoids under the hood, I mounted them in the wheelwells right next to the bracket where the hardline meets the flexible brake line.  In fact, I used the guide pin for the bracket as one of the mounting points for each solenoid.  

WIRING
Rather than use the 5 amp in-line fuse PH supplied, I went to Pep Boys and purchased a cool little item called Add-A-Circuit.  It uses the mini-fuses, and is an easy way to supply power to low amp accessories.




For those who don’t know, there is a fuse panel inside the car, which is located in the footwell on the passenger side of the car.





Before I talk about running the wires, I should comment about switch location.  You can mount your switch wherever you like.  I know some have mounted a pole switch to the wire that controls the high beams or the windshield washer.  With the flip of a remote switch, that puts the control for the linelocks at finger distance from the wheel.  That’s awfully convenient, but you’ll have to look elsewhere to determine which wire to use.  I wanted to keep the install simple, and decided that I wanted the switch out of the way, so I mounted it in the upper console by the overhead interior lights.  The panel pulls down with a little bit of effort. 




I drilled a hole in the front of the panel, and attached the switch to the panel.  Here's a shot I took once the wiring was complete:




I fished two wires through the opening behind the console, and ran them along the windshield behind the headliner towards the passenger side of the car.  The inside cover for the A-pillar pulls down with a gentle tug, and I was able to fish the wires behind the cover to the dash.  There is a small opening at the dash where it meets the A-pillar, and I fished the wires through there. 




You can fully open your glove box by folding the box inwards and pulling the door towards you – this creates easy access behind the dash.  Once the wires were fished, I went back to the switch and connected the wires to the two lines coming off the switch.  If you solder your connections, that will make for an even better connection.

Going back to the wires just fished behind the dash, I used plenty of nylon wire ties and routed the one wire to the fuse panel in the passenger footwell (but did NOT connect it yet).  I ran the other wire along the firewall, under the stereo, and behind the driver’s side footwell along the firewall towards the driver’s side A-pillar behind the dash. 

I started with the driver’s side wiring. The wire from the solenoid isn’t very long, so I made a connection with the same gauge wire, and routed it towards the back driver’s side corner of the firewall (using plenty of nylon wire ties).  To get the power supply line inside to my wire from the switch, I routed it from the engine compartment along a line that goes through a rubber grommet in that back corner.  Carefully using an awl, I cleared a way for the wire to go through. 




If you can find a better location to take the wire through the firewall, then use it.  I ran plenty of wire behind the dash, and used a crimp connector to mate it to the first wire from the switch.

On the passenger side solenoid, I connected another wire to the one fished through the chassis, and 

• It’s always a good idea to disconnect the battery when working on your car’s electrical system.  Before you do that, I suggest that you remember to run your power seat back all the way, and lower your windows.  Running the seat back creates more interior space to work in, and the doors will shut properly if the windows are down and the power is off.  It just makes things a little easier.
  
• Use quality jack-stands to support the car while working on it.
  
• The only non-standard tool needed is the tube bender, but they are fairly cheap.  Just remember – every project is an excuse to buy new tools!  Another choice would be to use braided steel lines for the connections.
  
• Have a friend help you bleed the brakes - avoid using those junkie vacuum tools to draw the fluid through.  Also, I attached a rubber hose to the bleeder, and let it drain into an old shirt – that way it didn’t spray brake fluid all over.  Don’t get brake fluid on any painted surfaces you care about.
  
• The way the system works, the solenoids are controlled by a “momentary switch”.  That means the solenoids only hold brake pressure while you hold the button.  At first, I thought my system wasn’t working because I was pressing and releasing the button like an on/off switch.  Pump and hold your brake pedal, then press and hold your switch/button.  Once you take your foot off the pedal, the front brakes will remain locked until you take your finger off the switch/button.

quote:

ORIGINAL: 28HopUp

I have a few more pics to add, but this will get things started...